Rectangle Q has an area of 2 square units. Thea drew a scaled version of Rectangle Q and labelled it Rectangle R. What scale factor did Thea use to go from Rectangle Q to Rectangle R?

Rectangle R is 8 by 9

Can someone check my answer? you

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Consider the function f(x)=-5x+3 what is f(-2)